Approximately one in every 500 to 650 baby boys is born with an extra X chromosome, a variation in their genetic code that until a few years ago was thought to result in infertility in all cases.

Advancements in genome sequencing have challenged the long-standing belief that the position of the centromere in the chromosome is fixed. Researchers from Okayama University, Japan, have analyzed ...

Human sex chromosomes originated from a pair of autosomes, the ordinary or non-sex chromosomes that contain the majority of our genome and come in identical pairs. That ancestral pair of autosomes ...

How do living things evolve? What is the myriad of processes by which generic variations in a population affect organisms' survival and allow reproduction in an ever-changing environment? Why do these ...

Robertsonian chromosomes (ROB) are a type of structurally variant chromosome that is created when two chromosomes fuse together to form an unusual bond. Found commonly in nature, these chromosomes are ...

The vast dataset allowed the Johns Hopkins University-led team to demonstrate robust connections between specific variations in a mother's DNA and their risk of miscarriage. The findings shed new ...

A 3D graphic showing an artist's interpretation of human X and Y chromosomes. On the left are blue bundles of genetic material making an X shape and on the right blue bundles of genetic material ...